i have used the CHANNEL PLUS 2532 its ok
but since i mount amps on both of my antennas i need to use
https://www.amazon.com/dp/B00006JPEA/
it is 3.5db loss and listed as $12 but I have paid probably half that in the past
bidirectional or bidirectional with power passing on all ports is not a high demand item but it is necessary for some installs like mine
I have an 8 bay like yours and I have paired that with a standard 10 foot yagi type antenna and had no problem.. at this time i have 2 of the yagi antennas matching pair both with amps
but previously i did rewire my 8 bay and i am not sure but I probably upgraded the combiner but idk but the quad shield cable I used was a better quality than what shipped. but you have to be very accurate on your cable lengths if you are upgrading the cable on them.. they should be the same equal size with no difference or less than a half inch so that you don't build in the chance for reflections and out of sync signals.
anyway...
never go with a splitter with more ports they always rob you of more signal... and I figure you were going to combine them all on one splitter but still thats what 7.5 PER connection vs 3.5
you got to use a special splitter that is power passing on all ports and is bidirectional
https://www.amazon.com/gp/product/B00006JPEA/
see how it says in out on each port .. bidirectional
and then its power passing on all ports .. DC and I/R passing
that means you can have the power supply in your livingroom or someplace that shoots power up to the preamplifier that is connected to the antenna.
this is not the strongest amplifier its 20db
https://www.amazon.com/gp/offer-listing/B00DQN3R9O
I have two CM-7777 Amplifiers.. one on each of my antennas and they are 30db .. every 3.5db more is 2x the power
that amp at $27 from amazon warehouse is your best deal though.. its strong and since its amazon you have easy return.. and normally their returns are in perfect condition...
that RCA antenna is a decent one .. its super light so easy to deal with and has pretty good sized elements so .. but unfortunately there are no good returns from amazon warehouse at the moment... i would just get a new one... the price difference from used is not enough to warrant getting used.. but I got two of them for $35 each from amazon warehouse.. it just took me 8 months to get them both heh.. you have to wait for someone to buy one and then return it.. but i think my purchases were damaged box.. the antenna was perfect when i got it and when you put it together it causes scratches because of the clips when you open it kinda like an umbrella.. there weren't any scratches .. it was perfect.. I wouldn't shy away from returns if they are directly from amazon warehouse and not a third party... or maybe a third party if the price is super low.
good luck